Deng Yu, the 37-year-old Chinese mathematician who won the 2026 Fields Medal, has a backup plan if artificial intelligence puts him out of a job. On Tuesday, he wrote on social media that “if AI can solve all maths problems, I’ll go home and write my yuri novel”. Deng is known to be a big fan of yuri, a genre of Japanese novels and comics that depicts intimate friendships and romantic relationships between women. In the post, which was later shared on another Chinese social platform, Deng wrote...